1120171221 has 32 divisors (see below), whose sum is σ = 1789200000. Its totient is φ = 688552704.

The previous prime is 1120171211. The next prime is 1120171249. The reversal of 1120171221 is 1221710211.

It is not a de Polignac number, because 1120171221 - 2²⁵ = 1086616789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120171194 and 1120171203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120171211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525085 + ... + 527213.

It is an arithmetic number, because the mean of its divisors is an integer number (55912500).

Almost surely, 2^1120171221 is an apocalyptic number.

It is an amenable number.

1120171221 is a deficient number, since it is larger than the sum of its proper divisors (669028779).

1120171221 is a wasteful number, since it uses less digits than its factorization.

1120171221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650 (or 3644 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 1120171221 is about 33468.9590665739. The cubic root of 1120171221 is about 1038.5517381518.

Adding to 1120171221 its reverse (1221710211), we get a palindrome (2341881432).

The spelling of 1120171221 in words is "one billion, one hundred twenty million, one hundred seventy-one thousand, two hundred twenty-one".